.site-indicate {
  margin-top: 10px;
  margin-bottom: 10px;
}
.site-indicate ul {
  list-style: none;
  padding: 0px;
  margin: 0px;
}
.site-indicate ul li {
  float: left;
  height: 34px;
  line-height: 34px;
  margin-right: 5px;
  color: darkgray;
}
.site-indicate ul li a {
  display: block;
  font-size: 14px;
  font-style: italic;
  cursor: pointer;
}

.vedio-play {
  margin-top: 15px;
  margin-bottom: 15px;
  font-family: -apple-system,"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","WenQuanYi Micro Hei","Microsoft Yahei",sans-serif;
  font-size: 14px;
  line-height: 1.42858;
}
.vedio-play .play-title {
  height: 24px;
  line-height: 24px;
  font-size: 18px;
  color: white;
}
.play-content {
  position: relative;
  background: #333;
  margin-top: 15px;
  height: 500px;
}

.play-content #play-vedio {
  background: black;
  cursor: pointer;
}
.play-content .play-btn {
  position: absolute;
  top: 212px;
  left: 312px;
  font-size: 75px;
  line-height: 75px;
  text-align: center;
  color: white;
}
.play-info-panel {
  position: relative;
  background: #333333;
}
.play-info-panel .play-info {
  margin-top: 10px;
  margin-bottom: 10px;
  font-size: 16px;
  color: white;
}
.play-info .course-desc {
  margin: 10px 0px;
  font-size: 15px;
}
.play-info .info-mutable {
  font-size: 12px;
  color: darkgrey;
}
.line {
  border-top-width: 0px;
  border-bottom: 1px solid rgba(200,200,200,0.3) ;
  height:1px;
  margin-bottom: 10px;
}
.catalogue {
  font-size: 15px;
  color: white;
  margin-bottom: 10px;
}
.catalogue-content {
  height: 300px;
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
}
/*滚动条样式*/
.catalogue-content::-webkit-scrollbar {/*滚动条整体样式*/
  width: 4px;     /*高宽分别对应横竖滚动条的尺寸*/
  height: 4px;
}
.catalogue-content::-webkit-scrollbar-thumb {/*滚动条里面小方块*/
  border-radius: 5px;
  -webkit-box-shadow: inset 0 0 5px rgba(25,153,153,0.5);
  background: rgba(0,0,0,0.2);
}
.catalogue-content::-webkit-scrollbar-track {/*滚动条里面轨道*/
  -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
  border-radius: 0;
  background: rgba(0,0,0,0.1);
}

.catalogue-content ul {
  list-style: none;
  padding:0px;
  margin:0px;
}

.catalogue-content ul li {
  height: 40px;
  line-height: 40px;
}
.catalogue-content ul li.chapter-item {
  position: relative;
  color: darkgray;
}

.catalogue-content ul li.chapter-item a{
  display: block;
  color: darkgray;
}

.catalogue-content ul li.chapter-item a:hover {
  color: white;
  cursor: pointer;
}
.chapter-item.current {
  color: white;
}

.chapter-item-icon {
  margin-right: 10px;
}

.float-info-panel {
  position: absolute;
  top:-54px;
  left: -20px;
  height: 54px;
  width: 140px;
  line-height: 54px;
  text-align: left;
  color: white;
  font-size: 16px;
  font-style: italic;
}
.float-info-panel-img {
  position: absolute;
  bottom: -24px;
  left: 140px;
  width: 100px;
  height: 78px;
  border: 0px;
}
.float-info-panel-img img {
  width: 100px;
  height: 78px;
}
